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EP1239983B1 - Procede pour la production d'une poudre - Google Patents

Procede pour la production d'une poudre Download PDF

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Publication number
EP1239983B1
EP1239983B1 EP00984822A EP00984822A EP1239983B1 EP 1239983 B1 EP1239983 B1 EP 1239983B1 EP 00984822 A EP00984822 A EP 00984822A EP 00984822 A EP00984822 A EP 00984822A EP 1239983 B1 EP1239983 B1 EP 1239983B1
Authority
EP
European Patent Office
Prior art keywords
gas
metal
atomization gas
alloying constituent
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00984822A
Other languages
German (de)
English (en)
Other versions
EP1239983A2 (fr
Inventor
Gerhard Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Applikations- und Technikzentrum fur Energieverfahrens- Umwelt- und Stromungstechnik
Original Assignee
Applikations- und Technikzentrum fur Energieverfahrens- Umwelt- und Stromungstechnik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10001968A external-priority patent/DE10001968B4/de
Application filed by Applikations- und Technikzentrum fur Energieverfahrens- Umwelt- und Stromungstechnik filed Critical Applikations- und Technikzentrum fur Energieverfahrens- Umwelt- und Stromungstechnik
Publication of EP1239983A2 publication Critical patent/EP1239983A2/fr
Application granted granted Critical
Publication of EP1239983B1 publication Critical patent/EP1239983B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/32—Methods for preparing oxides or hydroxides in general by oxidation or hydrolysis of elements or compounds in the liquid or solid state or in non-aqueous solution, e.g. sol-gel process
    • C01B13/326—Methods for preparing oxides or hydroxides in general by oxidation or hydrolysis of elements or compounds in the liquid or solid state or in non-aqueous solution, e.g. sol-gel process of elements or compounds in the liquid state
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/0602—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with two or more other elements chosen from metals, silicon or boron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1005—Forming solid beads
    • C03B19/102—Forming solid beads by blowing a gas onto a stream of molten glass or onto particulate materials, e.g. pulverising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C22C1/1042—Alloys containing non-metals starting from a melt by atomising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/086—Cooling after atomisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material

Definitions

  • the invention relates to a method for producing a Powder by atomizing a jet of molten metal by means of an atomizing gas striking it.
  • DE 39 13 649 A1 and DE-OS 24 00 026 describe a Process for producing metallic powders from a molten metal through gas atomization. Serves as atomizing gas inert gas.
  • DE 28 18 720 discloses a method in which also melts a molten metal under protective gas becomes. The molten metal is transformed into metal particles by means of water atomized.
  • DE-OS 24 46 698 describes a process for the production a two-layer contact piece. This is AgNiO powder obtained by atomizing an AgNi melt. By spraying AgNi powder is produced after spraying at 800 ° C oxidized in air for about 1 hour.
  • DE 39 13 649 C2 discloses the atomizing gas preheat to increase the gas outlet velocity. By increasing the gas outlet speed finer particles are generated.
  • the known method concerns the production of metallic powders, being as Atomizing gas an inert gas is used.
  • DE 40 23 278 A1 describes a process for the production of Metal oxide powders known.
  • the melt jet is included Oxygen applied as atomizing gas.
  • the atomizing gas is taken directly from a high pressure tank. It is in the liquefied or cold state.
  • the particles are disadvantageous in this process only superficially oxidized, which makes them suitable for e.g. as Pigment is sufficient.
  • a raw material for the production of a metal with predetermined electrical, mechanical, chemical and / or physical properties such a partially converted powder is not suitable.
  • the object of the invention is a method for the production a given chemical compound in the form of fine particles specify.
  • Another object of the invention is in particular in making the manufacturing process as efficient as possible a homogeneous powder for the production of electrical Specify contact elements.
  • the Particles have a homogeneous composition across their cross-section exhibit.
  • the particles become reactive Gas already predefined in a compound during atomization Stoichometry converted. The conversion is about e.g. an oxidation.
  • spherical particles from an alloy, wherein at least one alloy component in the form of a compound is present and this alloy component is essentially homogeneous is distributed over the particle cross section.
  • the temperature of the atomizing gas is set so that when it hits the beam at least 0.3 times the melting temperature in ° C corresponds to the metal.
  • the temperature is advantageous of the atomizing gas is greater than or equal to the melting temperature in ° C of the metal.
  • the atomizing gas causes the selected temperature a complete reaction with the Metal or an alloy component of the same.
  • the cooling rate is less than 10 2 K / s.
  • the aforementioned feature also contributes to a complete reaction of the atomizing gas with the metal or the alloy component.
  • connection is advantageously a Metal oxide, nitride or carbide. Accordingly, be expedient as atomizing gas air, nitrogen, ammonia, Oxygen, carbon-containing gas or a mixture thereof used.
  • atomizing gas or the mixture can also Noble gas can be added.
  • the metal can have at least one from a first and a second alloy component alloy formed.
  • the first alloy component can be in a molten state in a first container and the second alloy component in molten Condition in a second container, the first and second alloy components in one to the Melt outlet opening leading mixing tube can be mixed.
  • the melt of the first alloy component is saturated with oxygen.
  • the second alloy component under inert conditions be melted.
  • the first alloy component it can be silver or copper, the second Alloy component expediently tin, indium, bismuth or a mixture thereof.
  • Nm 3 being understood to mean a "nominal cubic meter”.
  • the admission pressure of the atomizing gas can be set to 1 to 50 bar.
  • the powder cooled after formation of the compound can be done with the powder with gas, liquefied gas or water.
  • the application can take place both in countercurrent and in Current direction take place. Air, oxygen, nitrogen, Noble gas or a mixture thereof can be used.
  • To make a compound in the form of a fine sintered Powder is the temperature of the atomizing gas in a range between 0.3 times the melting temperature in ° C of the metal and the melting temperature of the metal.
  • the connection Through the contact of the atomizing gas on the Surface of the metal droplets formed the connection. She bursts in the form of irregularly shaped fragments until the Metal droplet is fully implemented for connection.
  • a connection can be made from the metal that correspond to a given stoichiometry. For example, the metal can be completely converted into its oxide.
  • the temperature of the atomizing gas is chosen higher than the melting temperature of the compound being formed. That after the reaction of the atomizing gas with the metal formed connection remains in the molten state.
  • Spherical particles form with a grain size of at most 100 ⁇ m.
  • silver is melted in a first container as the first alloy component.
  • the silver melt is saturated with oxygen, for example by means of an oxygen lance.
  • a second alloy component e.g. Tin in one second container melted under an inert gas atmosphere.
  • the first alloy component namely silver
  • the second alloy component e.g. Tin
  • the molten first alloy component is in the mixing tube with the molten second alloy component Mixed tin.
  • the melt becomes the first Alloy ingredient released oxygen.
  • the release of the oxygen causes a turbulent and therefore complete Mixture of the first and second alloy components. Due to the released oxygen, the tin is still partially oxidized before exiting the ring nozzle.
  • the mixture then emerges from the ring nozzle. It becomes immediate after exiting with oxygenated preheated Atomizing gas applied through the annular gap Ring nozzle emerges.
  • the atomizing gas is preheated in such a way that when it hits the emerging melt jet in a range between the melting temperatures of the alloy components lies.
  • the spherical particles formed reach atomizing gas in a cooling zone. They are countercurrent with cooling fluid applied.
  • the cooling fluid can be gas, Trade water or liquefied petroleum gas.
  • the cooled particles will then collected in a container and removed. For example, The atomizing gas, Fine particles and cooling fluid removed and, if necessary, after separation and cleaning returned to the process.
  • 1 is a melting device and 2 is a Called atomization chamber.
  • the melting device 1 has a container in which the melted to be atomized Metal.
  • An inlet leads from the container with a Melt outlet opening 20 in an atomization chamber 2.
  • Ein Atomizing gas is in a pressure storage tank 4.
  • the atomizing gas can via a first gas expansion device 5 a gas heater 6 are supplied.
  • at the gas heating device 6 can e.g. a pebble theater act.
  • the Dosage of the outlet temperature of the atomizing gas also a second gas expansion device 7 with the gas heating device 6 be connected. In the gas heater 6 the gas is heated to a predetermined temperature.
  • the Gas heater 6 is connected via a feed pipe 8 to the Ring nozzle 3 connected.
  • the ring nozzle 3 preferably has one Annular gap which is arranged close to the outlet of the melt jet is.
  • the annular gap concentrically surrounds the melt outlet opening.
  • the width of the annular gap is adjustable.
  • the gas outlets are preferably designed so that Atomizing gas at an angle between 0 ° to 30 °, preferably between 10 ° and 25 °, on the melt jet axis incident. It is also possible to replace the ring gap Provide single holes.
  • Reference numerals 9a denote first nozzles that are arranged downstream of the ring nozzle 3.
  • first Nozzles 9a is also preheated against atomizing gas blown the particle stream. On the one hand, this makes the trajectory kept essentially horizontal and on the other hand the The cooling rate of the particles is reduced.
  • 9b are designated second nozzles for supplying coolant.
  • the coolant can be gas, liquefied gas or Act water.
  • the second nozzles 9b are preferably arranged that a bend of the particle flow in a vertical Trajectory is made possible.
  • a conical collection container is with 10, a floor drain with Designated 11.
  • a cyclone separator is used to separate the fine fraction 12 with downstream cooling device 13 intended.
  • the in Fig.2 shown double container can be used. It exists a first container 14 and a second container 16. With 15 a gas lance is designated, which is in the first container 14 can be immersed. The second container 16 is closed. It can be flushed with an inert gas. A den second container 16 with a mixing pipe 18 connecting supply line is designated 17. The mixing tube 18 has one Melt outlet opening 20. At 19 there is an annular gap referred to, through which the atomizing gas exits and under at an angle of about 20 ° to that from the melt outlet opening 20 emerging melt jet hits.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Glass Compositions (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Claims (17)

  1. Procédé pour produire une poudre en pulvérisant un jet de métal fondu au moyen d'un gaz de pulvérisation projeté sur lui, sachant que
    a) on utilise en tant que gaz de pulvérisation un gaz réactif de manière à ce qu'en réagissant avec le métal ou avec un composant d'alliage de celui-ci, le gaz de pulvérisation forme un composé et que
    b) la température du gaz de pulvérisation et la vitesse de refroidissement sont réglées de telle manière que la température du gaz de pulvérisation atteignant le jet correspond à au moins 0,3 fois la température de fusion du métal exprimée en degrés Celsius et que la vitesse de refroidissement soit inférieure à 102 K/s, de façon à ce que le métal ou le composant d'alliage de celui-ci puisse être transformé essentiellement entièrement en composé en une seule étape.
  2. Procédé selon la revendication 1, sachant que la température du gaz de pulvérisation atteignant le jet est supérieure ou égale à la température de fusion du métal exprimée en degrés Celsius.
  3. Procédé selon l'une des revendications précédentes, sachant que le composé est un oxyde - un nitrure - ou un carbure métallique.
  4. Procédé selon l'une des revendications précédentes, sachant que l'on utilise en tant que gaz de pulvérisation de l'air, de l'azote, de l'ammoniac, de l'oxygène, un gaz carboné ou un mélange de ceux-ci.
  5. Procédé selon la revendication 4, sachant que l'on ajoute au gaz de pulvérisation ou au mélange un gaz rare.
  6. Procédé selon l'une des revendications précédentes, sachant que le métal est un alliage constitué d'au moins un premier et un second composant d'alliage.
  7. Procédé selon la revendication 6, sachant que le premier composant d'alliage est recueilli après fusion complète dans un premier récipient (14) et un second composant d'alliage est recueilli après fusion complète dans un second récipient (16), et que le premier et le second composants d'alliage sont mélangés dans un tube de mélange (18) menant à une ouverture de sortie (20) de la masse fondue.
  8. Procédé selon la revendication 7, sachant que la masse fondue du premier composant d'alliage est saturée avec de l'oxygène.
  9. Procédé selon la revendication 7 ou 8, sachant que le second composant d'alliage est fondu dans des conditions inertes.
  10. Procédé selon l'une des revendications 7 à 9, sachant que le premier composant d'alliage est de l'argent ou du cuivre.
  11. Procédé selon l'une des revendications 7 à 10, sachant que le second composant d'alliage est de l'étain (Sn), de l'indium (In), du bismuth (Bi) ou un mélange de ceux-ci.
  12. Procédé selon l'une des revendications précédentes, sachant que le débit du gaz de pulvérisation est réglé sur une valeur comprise entre 1 et 10 Nm3/min.
  13. Procédé selon l'une des revendications précédentes, sachant que la pression d'admission du gaz de pulvérisation est comprise entre 1 et 50 bars.
  14. Procédé selon l'une des revendications précédentes, sachant que, pendant la réaction, le métal est guidé au moins temporairement sur une trajectoire essentiellement horizontale.
  15. Procédé selon l'une des revendications précédentes, sachant que, pour régler la vitesse de refroidissement en aval de l'ouverture de sortie (20) de la masse fondue, du gaz de pulvérisation est projeté sur le flux de particules.
  16. Procédé selon l'une des revendications précédentes, sachant que la poudre est refroidie après formation du composé.
  17. Procédé selon l'une des revendications précédentes, sachant que, pour refroidir la poudre, on l'expose à du gaz de préférence liquéfié ou à de l'eau.
EP00984822A 1999-10-15 2000-10-11 Procede pour la production d'une poudre Expired - Lifetime EP1239983B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19949872 1999-10-15
DE19949872 1999-10-15
DE10001968 2000-01-18
DE10001968A DE10001968B4 (de) 1999-10-15 2000-01-18 Verfahren zur Herstellung eines Pulvers
PCT/DE2000/003573 WO2001026853A2 (fr) 1999-10-15 2000-10-11 Procede pour la production d'une poudre

Publications (2)

Publication Number Publication Date
EP1239983A2 EP1239983A2 (fr) 2002-09-18
EP1239983B1 true EP1239983B1 (fr) 2003-10-01

Family

ID=26003911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00984822A Expired - Lifetime EP1239983B1 (fr) 1999-10-15 2000-10-11 Procede pour la production d'une poudre

Country Status (8)

Country Link
US (1) US6805726B1 (fr)
EP (1) EP1239983B1 (fr)
JP (1) JP2003514986A (fr)
AT (1) ATE251002T1 (fr)
AU (1) AU2147701A (fr)
ES (1) ES2208446T3 (fr)
PT (1) PT1239983E (fr)
WO (1) WO2001026853A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7093463B1 (en) * 1999-10-15 2006-08-22 Applikations-Und Technikzentrum Fur Energieverfahrens-Umwelt-Und Stromungstechnik (Atz-Evus) Method and device for producing powders that consist of substantially spherical particles
US9005330B2 (en) * 2012-08-09 2015-04-14 Ormet Circuits, Inc. Electrically conductive compositions comprising non-eutectic solder alloys
JP2020182900A (ja) * 2019-05-07 2020-11-12 日本エア・リキード合同会社 高圧ガスアトマイザー用のガス供給システム
CN112680790A (zh) * 2020-12-07 2021-04-20 宁波建锡新材料有限公司 一种磷化铟半导体材料的合成方法
CN113909482B (zh) * 2021-10-15 2023-11-07 泉州市鑫航新材料科技有限公司 一种铁硅铬镓铟氮合金软磁粉末的气雾化制备方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029571B (de) * 1956-07-13 1958-05-08 Siemens Ag Verfahren zur Herstellung eines Sinterverbundwerkstoffes, insbesondere fuer elektrische Kontakte
US4135922A (en) * 1976-12-17 1979-01-23 Aluminum Company Of America Metal article and powder alloy and method for producing metal article from aluminum base powder alloy containing silicon and manganese
DE3311343C2 (de) * 1983-03-29 1987-04-23 Alfred Prof. Dipl.-Ing.Dr.-Ing. 7830 Emmendingen Walz Verfahren zur Herstellung von feinen Metallpulvern sowie Vorrichtung zur Durchführung des Verfahrens
US4540546A (en) * 1983-12-06 1985-09-10 Northeastern University Method for rapid solidification processing of multiphase alloys having large liquidus-solidus temperature intervals
JPS62197141A (ja) * 1986-01-21 1987-08-31 エナ−ジ−・コンバ−シヨン・デバイセス・インコ−ポレ−テツド 微粒合金化された合成材料の製造方法
EP0230959A3 (fr) * 1986-01-21 1989-07-12 Energy Conversion Devices, Inc. Préparation de matériaux synthétiques alliés à l'échelle atomique
DE4001484A1 (de) * 1990-01-19 1991-08-01 Bayer Ag Verfahren zur herstellung pulverfoermiger aluminiumlegierungen
US5368657A (en) * 1993-04-13 1994-11-29 Iowa State University Research Foundation, Inc. Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions
JPH0891836A (ja) * 1994-09-19 1996-04-09 Furukawa Co Ltd 亜酸化銅粉末の製造方法
DE19523922A1 (de) * 1995-04-26 1996-10-31 Duerrwaechter E Dr Doduco Verfahren zum pulvermetallurgischen Herstellen von Werkstoffen für elektrische Kontakte, welche Silber und ein oder mehrere Metalloxide enthalten
DE19758111C2 (de) * 1997-12-17 2001-01-25 Gunther Schulz Verfahren und Vorrichtung zur Herstellung feiner Pulver durch Zerstäubung von Schmelzen mit Gasen
AT410640B (de) * 2000-07-07 2003-06-25 Tribovent Verfahrensentwicklg Verfahren und vorrichtung zum zerstäuben von metallschmelzen
US6444009B1 (en) * 2001-04-12 2002-09-03 Nanotek Instruments, Inc. Method for producing environmentally stable reactive alloy powders

Also Published As

Publication number Publication date
EP1239983A2 (fr) 2002-09-18
ATE251002T1 (de) 2003-10-15
PT1239983E (pt) 2004-02-27
ES2208446T3 (es) 2004-06-16
US6805726B1 (en) 2004-10-19
AU2147701A (en) 2001-04-23
JP2003514986A (ja) 2003-04-22
WO2001026853A3 (fr) 2001-06-07
WO2001026853A2 (fr) 2001-04-19

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